Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c773d3aa885721…

MALICIOUS

PDF

70.3 KB Created: 2020-12-03 02:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2ff79207d8cb9f7f3f28235e8edd6f1c SHA-1: dcea43cc0c6766758184960a2454d1f368b712d5 SHA-256: e6c773d3aa885721b167bea80e1c834800e91abfebbce5cd45fe745ad76a2bf7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/strik?utm_term=tokyo+ghoul+main+characters+season+1 PDF link annotation
    • https://nodudoweg.weebly.com/uploads/1/3/4/5/134599631/4443785.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jazofi/78516153327.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bd98403f5353fda1b0ca/t/5fc5344dfa04221c71c8c76e/1606759504837/63717900574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/027c918b-2439-4f63-9796-9da235e7b54d/orison_swett_marden.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3d941972c46e3c6ac1e9/1606303125286/union_zip_code_address.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc519b12bbd74065821ad2f/t/5fc8326fd6e0cc37e333f0e4/1606955632483/archery_night_shooting.pdfIn PDF document text
    • https://s3.amazonaws.com/xotorulu/watch_the_meg_free_123movies.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/xosotaguranelukofu.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/blickle_caster_wheels_catalogue.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf563c9ee0f32b874ab5f7/1606374973031/new_nd_license_plates_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/madonizewuvaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf6be828-5207-4ddb-b898-475bb44abdbc/60318795752.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b246df132613bbc941e4/t/5fc60d8cf81c9a2a0c731d11/1606815120571/xbox_smartglass_app_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0325a52-5bfc-4fee-b6e5-1d3e6f9e50a0/rixinilidejesalimedam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d63aabc-49d2-40d2-8420-6de3ff1f0d6e/king_s_raid_free_rubies.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d54a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54A 5380 bytes
SHA-256: 14831e5dd7d974f6de108c6d687751f977781e1a61fcf3cc016c107f4934219a
font_01_sfnt_off0000e77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77D 10988 bytes
SHA-256: 07c6bf858860ee2e71e27385bd2928ef0bc45453e14519153c164d1fa07ced7d

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